... many parenting plans include a "Right of First Refusal".. meaning before engaging babysitters or other 3rd party services, she should offer you the chance to watch the kids.
The farther away from 50/50, the harder I would push for this.
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712